T Themerella
Fix Guide

How to Fix a Missing CSP Header

The response has no Content-Security-Policy header.

Safe public URL scan. Results include technology evidence, SEO checks, security headers, accessibility basics, and a developer fix list.

Recommended fix

Start with a report-only CSP, inventory third-party scripts, then enforce a tested policy.

This guide is designed to pair with a scanner report. Run a URL scan first, then copy the fix list to your developer or CMS workflow.

Developer task

Add Content-Security-Policy at Nginx/CDN/server level and monitor violations before strict enforcement.